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SubjectRe: [syzbot] [media?] KASAN: slab-use-after-free Read in dvb_device_open
Date
On Sat, 18 Jan 2025 11:50:29 -0800
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 595523945be0 Merge tag 'devicetree-fixes-for-6.13-2' of gi..
> git tree: upstream
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12183fc4580000

#syz test

--- x/drivers/media/dvb-core/dvbdev.c
+++ y/drivers/media/dvb-core/dvbdev.c
@@ -109,8 +109,10 @@ static int dvb_device_open(struct inode
err = file->f_op->open(inode, file);
up_read(&minor_rwsem);
mutex_unlock(&dvbdev_mutex);
- if (err)
+ if (err) {
+ WARN(1, "open %pS\n", file->f_op->open);
dvb_device_put(dvbdev);
+ }
return err;
}
fail:
--
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